These Microfiber Deep-Pocket Sheet Sets drop from an already-reasonable $34.99 to $27.99 with code APRIL20 at Linens 'N Things. This matches some of the best pricing we've ever seen on the deep-pocket style. Plus, they ship free. Choose from several color options in sizes from twin through Cal King at this price. From personal experience, I can tell you that sheets to cover an 18" mattress are difficult to find. There is no sales tax (except CA).